Hello,
this is bug tdf#134607 - LO7RC1 - LANGPACK macOS - many versions fail to recognize LibreOffice 7.0 / 7.1 installation as valid on Catalina and Big Sur
Workaround:
- Open
Finder
- Go to
Finder -> Preferences -> Advanced
- Disable option
[ ] Show all filename extensions
- Install the langpack
-
Optional: Restore option setting
[x] Show all filename extensions
Tested using LibreOffice
Version: 7.1.0.3 / LibreOffice Community, Build ID: f6099ecf3d29644b5008cc8f48f42f4a40986e4c
CPU threads: 4; OS: Mac OS X 10.16; UI render: default; VCL: osx
Locale: en-US (en_US.UTF-8); UI: en-US, Calc: threaded
Hope that helps